How to fix "... is not a function" error?

I'm passing down a state setter to a child (from App to Nav), but when I'm calling it I'm getting TypeError: ... is not a function.

How should I fix it? What should I do?

App:

import React, { useState, useEffect } from 'react';
import './App.css';

/* Component imports */
import Nav from './components/nav/nav';
import Container from './components/container/container';

/*------------------*/

function App() {
  const [appState, setAppState] = useState("home");

    useEffect(() => {
      console.log(appState);
    }, [appState])

  return (  
    <div className="App">
      <Nav state={setAppState}/>
      <Container stateSetter={appState}/>
    </div>
  );
}

export default App;

Nav:

import React, { useState, useEffect } from 'react';
import './nav.css';

/* Component imports */



/*------------------*/

function Nav(props) {
    return (
        <div>
            <div className="Nav" id="nav">
                <nav>
                    <ul>
                        <li><button><span>App</span></button></li>
                        <li><button onClick={() => props.stateSetter("home")}>Home</button></li>
                        <li><button onClick={() => props.stateSetter("products")}>Products</button></li>
                        <li><button onClick={() => props.stateSetter("about_us")}>About Us</button></li>
                        <li><button onClick={() => props.stateSetter("log_in")}>Log in</button></li> 
                    </ul>
                </nav>
            </div>
        </div>
    );
}

export default Nav;

Container:

import React, { useState, useEffect } from 'react';
import './conatiner.css';

/* Component imports */



/*------------------*/

function Container(props) {

    const [cont_appState] = useState(props.state);

    useEffect(() => {

    }, [cont_appState])

    return (
        <div>
            <div className="container">

            </div>
        </div>
    );
}

export default Container;

I just started working an this project, I am also new to react, sorry for my messy code.

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